dIXEL
Installing and Operating Instructions
1592018110
1592018110 XR460C GB r1.0 04.07.2005
XR460C
2/5
6.
THE DISPLAY
X
---
-C
XR
4
0
0
The display is divided in 2 parts:
Upper left part: to see the temperature2 (upper display)
Lower left part: to see the temperature1(lower display)
6.1
THE KEYBOARD
SET1
To display and modify target set point1; in programming mode it selects a parameter or
confirm an operation.
To switch on/off the instrument: by holding it pressed for 5s the instrument is switched in
stand by mode.
SET2
To display and modify target set point2.
o/
(UP/DEFROST 2) in programming mode it browses the parameter codes or increases
the displayed value. By holding it pressed for 3s the defrost for section 2 is started.
n/
(DOWN/DEFROST 1) in programming mode it browses the parameter codes or
decreases the displayed value. By holding it pressed for 3s the defrost for section 1 is started
o
+
n
To lock and unlock the keyboard.
SET +
n
To enter the programming mode.
SET +
o
To exit the programming mode.
6.2
MEANING OF THE ICONS
6.2.1 I
con
FUNCTION
6.2.2 Meaning
ON Celsius
degree
ON Fahrenheit
degree
ON
Compressor 1 on
FLASHING
Anti-short cycle delay enabled for compressor 1
ON
Compressor 2 on
FLASHING
Anti-short cycle delay enabled for compressor 2
ON
Defrost 1 in progress
FLASHING
Drip time in progress for section 1
ON
Defrost 2 in progress
ON Fan
enabled
FLASHING
Drip time in progress
ON ALARM
signal
6.3
HOW TO SEE AND MODIFY THE SET-POINT
Push and release the SET1 or SET2 key:
the bottom display shows the label St1 or St2
the upper display shows the Set point value flashing
To change the Set value push the
o
or
n
within 15s.
To memorise the new set point value push the SET1 or SET2 key again or wait 15s.
6.4
HOW TO START A MANUAL DEFROST FOR THE SECTION 1 OR SECTION 2
To start a defrost for the section 1: push the DOWN key(
) for 3s.
To start a defrost for the section 2: push the UP key(
) for 3s.
6.5
HOW TO ENTER THE “PR1” PARAMETER LIST
To change the parameter’s value operate as follows:
Enter the Programming mode by pressing the Set1 and DOWN key for 3s
The controller will show the first parameter present in the Pr1 menu:
Bottom menu: label
Upper menu: value
To exit: Press SET + UP or wait 15s without pressing a key.
6.6
HOW TO ENTER IN PARAMETERS LIST “PR2”
To access parameters in “Pr2”:
Enter the “Pr1” level.
Select “Pr2” – “PAS” parameter and press the “SET1” key.
The flashing value “0 - - ” is displayed. use
o
or
n
to input the security code and confirm the figure
by pressing “SET” key.
The security code is “321”.
If the security code is correct the access to “Pr2” is enabled by pressing “SET1” on the last digit.
Another possibility is the following:
After switching ON the instrument, within 30 seconds, push SET1 +
n
keys together for 3s: the Pr2
menu will be entered.
6.7
HOW TO MOVE A PARAMETER FROM THE “PR2” MENU TO “PR1” AND VICE VERSA.
Each parameter present in “Pr2” MENU can be removed or put into “Pr1”, user level, by pressing
“SET1 +
n
”.
In “Pr2” when a parameter is present in “Pr1” the decimal point LE of the bottom display is on.
6.8
HOW TO CHANGE A PARAMETER
To change a parameter value operates as follows:
Enter the Programming mode
Select the required parameter.
Press the “SET1” key and the value starts blinking.
Use “UP” or “DOWN” to change its value.
Press “SET1” to store the new value and move to the following parameter.
TO EXIT: Press SET1 +
o
or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
6.9
HOW TO LOCK THE KEYBOARD
Keep pressed for more than 3 s the
o
and
n
keys.
The “POF” message will be displayed and the keyboard will be locked. At this point it will be possible
only to see the set points.
If a key is pressed more than 3s the “POF” message will be displayed.
6.10
TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the
o
and
n
keys, till the “Pon” message will be
displayed.
6.11
ON/OFF FUNCTION – HOW TO SWITCH ON AND OFF THE CONTROLLER
If the function is enabled (par. onF=yES), by pressing the SET1 key for more than 5s the controller
is switched OFF. The stand-by function switches OFF all the relays and stops the regulation. During
the stand by if a monitored unit is connected, it does not record the instrument data and alarms
To switch the instrument on again press the SET1 key for 5s.
NOTE1: When the instrument is under Stand-by, all the relays are under power supply. Don’t
connect any loads to the normal closed contact of the relays.
NOTA2: With the instrument in stand-by, it’s possible to see and modify the set points and enter the
programming mode.
7.
PARAMETER LIST
DIFFERENTIALS
Hy1 Differential1: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point1, always positive.
Compressor1 Cut IN is Set Point Plus Differential1 (Hy1). Compressor1 Cut OUT is when the
temperature reaches the set point1.
Hy2 Differential2: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point2, always positive.
Compressor2 Cut IN is Set Point2 Plus Differential2 (Hy2). Compressor2 Cut OUT is when the
temperature reaches the set point2.
REGULATION – SECTION 1
LS1 Minimum set point1 limit: (-50,0°C
÷
SET1; -58°F÷SET1) Sets the minimum acceptable value
for the set point1.
US1 Maximum set point1 limit: (SET1
÷
110°C; SET1÷230°F) Set the maximum acceptable value
for set point1.
OdS1
Outputs activation delay of section 1 at start up: (0÷255 min) This function is enabled
at the initial start up of the instrument and inhibits any output activation of the section 1 for the
period of time set in the parameter. (Light can work)
AC1 Anti-short cycle delay for compressor1: (0÷30 min) interval between the compressor1 stop
and the following restart.
Con1 Compressor1 ON time with faulty probe1: (0÷255 min) time during which the compressor1
is active in case of faulty thermostat probe. With COn=0 compressor1 is always OFF.
COF1 Compressor1 OFF time with faulty probe1: (0÷255 min) time during which the compressor
is off in case of faulty thermostat probe. With COF=0 compressor is always active.
CH1 Kind of action for section 1: CL = cooling; Ht = heating
REGULATION – SECTION 2
LS2 Minimum set point2 limit: (-50,0°C
÷
SET2; -58°F÷SET2) Sets the minimum acceptable value
for the set point2.
US2 Maximum set point2 limit: (SET2
÷
110°C; SET2÷230°F) Set the maximum acceptable value
for set point2.
OdS2 Outputs activation delay of section 2 at start up: (0÷255 min) This function is enabled at
the initial start up of the instrument and inhibits any output activation of the section 1 for the
period of time set in the parameter.
AC2 Anti-short cycle delay for compressor2: (0÷30 min) interval between the compressor2 stop
and the following restart.
Temperature2
Temperatature1
